RECON: TNO occultation with 523646

Event between (523646) 10VL201 and star GA1080:00552725 with event index number of 2381633

Geocentric closest approach at 2022/12/08 18:11:17 UTC

J2000 position of star is 04:22:54.2 +18:06:12
Equinox of date position of star is 04:24:13.8 +18:09:19
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 18 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=21.3

TNO is 34.9 AU from the Sun and 33.9 AU from the Earth.
The TNO is moving 24.6 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 70 seconds.
The 1-sigma cross-track error in the shadow position is 1268 km.

The TNO has an absolute magnitude Hv=5.9
Diameter=389.1 km assuming a 5% albedo -- 15.9 sec chord
Diameter=158.8 km assuming a 30% albedo -- 6.5 sec chord
Dynamical classification is 4:3E
 
 
 
 
 
 
 
 

Star training set for 523646, (2022/12/08 18:11UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:14.4 +16:33:13  0.8  3.49  16
44Zet Per      03:55:34.8 +31:57:00  2.8 15.23  21
61Del1Tau      04:24:15.6 +17:35:40  3.8  0.56  18
PPM 119813     04:22:43.7 +18:19:10  8.1  0.39  18
523646         04:24:13.9 +18:09:19 16.2        17
Positions are for equinox of date

Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.

Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.

Star training set for 523646, (2022/12/08 18:11UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8  3.49  16
44Zet Per      03:54:07.9 +31:53:01  2.8 15.23  21
61Del1Tau      04:22:56.3 +17:32:32  3.8  0.56  18
PPM 119813     04:21:23.9 +18:15:59  8.1  0.39  18
523646         04:22:54.2 +18:06:12 16.2        18
Positions are for J2000

Event circumstances last updated at 2022/12/02 03:09:27 UT

Marc W. Buie, Southwest Research Institute

RECON